Fix for nested directories in tar archive (#2062)

* Fix for nested directories in tar archive

* fix untar for tar with a single directory

* prettier

modules/untar/main.nf

@@ -27,7 +27,7 @@ process UNTAR {
 
     ## Ensures --strip-components only applied when top level of tar contents is a directory
     ## If just files or multiple directories, place all in output
-    if [[ \$(tar -tzf ${archive} | grep "/\$" | wc -l) -eq 1 ]]; then
+    if [[ \$(tar -tzf ${archive} | grep -o -P "^.*?\\/" | uniq | wc -l) -eq 1 ]]; then
         tar \\
             -C output --strip-components 1 \\
             -xzvf \\

tests/modules/untar/test.yml

@@ -15,7 +15,7 @@
   tags:
     - untar
   files:
-    - path: output/untar/flowcell/220422_M11111_0222_000000000-K9H97/RunInfo.xml
+    - path: output/untar/flowcell/RunInfo.xml
       md5sum: 03038959f4dd181c86bc97ae71fe270a
 
 - name: untar test_untar_onlyfiles